View Compilation Error

0_0_6815973_2168.cpp: In function `bool spfa()':
0_0_6815973_2168.cpp:57: error: ISO C++ forbids declaration of `cnt' with no type
0_0_6815973_2168.cpp: In function `int main()':
0_0_6815973_2168.cpp:146: error: `cnt' undeclared (first use this function)
0_0_6815973_2168.cpp:146: error: (Each undeclared identifier is reported only once for each function it appears in.)